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@ARTICLE{Dagger:851210,
      author       = {Dagger, Tim and Kasnatscheew, Johannes and
                      Vortmann-Westhoven, Britta and Schwieters, Timo and Nowak,
                      Sascha and Winter, Martin and Schappacher, Falko M.},
      title        = {{P}erformance tuning of lithium ion battery cells with
                      area-oversized graphite based negative electrodes},
      journal      = {Journal of power sources},
      volume       = {396},
      issn         = {0378-7753},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2018-04910},
      pages        = {519 - 526},
      year         = {2018},
      abstract     = {The accuracy for positional alignment of the positive
                      electrode vs. the negative electrode is of great importance
                      for the quality of assembly of lithium ion cells.
                      Area-oversized negative electrodes increase the tolerance
                      for electrode alignment. In this study, the impact of
                      area-oversizing of the negative electrode on the specific
                      capacity losses during charge/discharge cycling is
                      systematically investigated by using electrochemical and
                      analytical methodologies. It is shown, that with a higher
                      degree of area-oversizing more active lithium is kinetically
                      trapped in the outer negative electrode areas
                      (“overhang”), causing performance-deteriorating losses
                      in usable specific capacity. Nevertheless, most of this
                      “lost” specific capacity is of reversible nature as the
                      trapped active lithium can be electrochemically recovered,
                      which is analytically proven by inductively coupled
                      plasma-optical emission spectrometry (ICP-OES) and laser
                      ablation-inductive coupled plasma-mass spectrometry
                      (LA-ICP-MS). Given this relation, a periodic application of
                      a short constant voltage step after discharge results in a
                      significant performance increase. In contrast, holding the
                      cell in the charged state is detrimental for cells with area
                      oversized negative electrodes as the amount of reversible
                      and irreversible trapped active lithium increases. Based on
                      the obtained insights, the influence of variations of the
                      electrochemical conditions on charge/discharge cycling
                      performance is discussed.},
      cin          = {IEK-12},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IEK-12-20141217},
      pnm          = {131 - Electrochemical Storage (POF3-131)},
      pid          = {G:(DE-HGF)POF3-131},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000440876700061},
      doi          = {10.1016/j.jpowsour.2018.06.043},
      url          = {https://juser.fz-juelich.de/record/851210},
}